Mashaal Masha
An artist paints and sells square tiles. The selling price $P$, in dollars, of a painted tile is a linear function of the side length of the tile $s$, in inches, as shown in the table below.
Side length, $s$ (inches) Price, $P$ (dollars)
3 8.00
6 18.00
9 28.00
Which of the following could define the relationship between $s$ and $P$?
Difficulty: Medium
A: 

$P=3s+10$

B: 

$P=\frac{10}{3}s+8$

C: 

$P=\frac{10}{3}s-2$

D: 

$P=\frac{3}{10}s-\frac{1}{10}$

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